Unsubscribe Report

Does anyone know why, in the unsubscribe report you can select the Email Subject in the column fields, but when you click to export the data, the Email subject field disappears? I need to run an unsub report, month by month, by email subject.

Thanks

Always been an odd one to me that. The way I get round it is to add a tag to that searched list - which I can then find in a normal contact search and thus export and do whatever I like with

Andy